Temper screw



G. E. TURNEY.

TEMPER SCREW.

7 APPLICATION FILED JUNE 13. 1921.

Patented (m. 241; 1922 Patented Oct. 24, 1922.

STA'EES tea Flt ti GLENN E. TURNEY, OF LATHAM, KANSkS.

TEMPER SCREW.

Application. filed June 13,

' for locking the temper screw against rotation relative to its supporting reins.

Another object of the invention 15 to pro- I vide a handle for a temper screw which may be readily assembled therewith or removed therefrom, together with means for interlocking the handle to the screw, I

A further object of the invention is to provide an improvement in the detachable connection between the temper screw and its supporting reins.

, These and such inafter appear are attained by the novel construction, combination and arrangement of parts to be hereinafter specifically described v and claimed.

Reference will now panying drawings forming a part of this specification, wherein:

Figure 1 is a front elevation of a portion of a temper screw embodied therein.

Figure 2 is a sectional view of a portion of the means for 1nterlock-,

the handle showing ing the handle to the screw and the means for locking the screw against rotation relative to the supporting reins.

Figure 3 is a sectional view taken on the line 3--3 of Figure 1 and looking in the direction of the arrows.

Throughout the following detailed description and on the several figures of the drawing, similar parts are referred to by like reference characters.

Referring to the drawings, the reference numeral 1 designates the reins having at their lower ends clamping jaws 2 having screw-engagement with the temper screw 3. Surrounding the jaws 2 is a collar 4 having a bolt 5 extending through the free ends thereof upon which is journaled a lever 6 having an eccentric or cam portion 7 for co- .operation with one of the jaws 2, a set-screw be had to the accomj having my improvements through the screw from end to-end thereof 1921. Serial No. 477,113.

8 beingadjustably mounted in the eccentric for limiting the movement of the lever in one d rection. When the lever 6 is in the full line position shown in Figure 1, the jaws 2 are in their normal closed position and the temper screw 3 is adjusted in the usual manner by rotation thereof. When,

however, the lever is moved to the dotted line position the jaws 2 may be opened sufficiently to enable the workman to raise the temper screw to any desired position whereupon the lever will be returned to full line positionto close the jaws'tightly about the screw. It will be noted that the set-screw 8 may be so adjusted that the engaging point 9 on the cam portion 7 of the lever will be above the pivot point 5 when the lever is in full line position. In other words the setscrew arrests the movement of the lever when it has moved slightly past dead center in the direction to close the jaws whereby the lever will be locked in this position. The provision of.the set-screwavoids the necessity of weighting the free end of the lever and other objects as may hereproviding a positive latch for holding it in operative position as shown, for instance, in the patent by Baldwin, No. 476,721.

The reference numeral 10 designates the swivel which is supported on the head 11 at the lower end of the temper-screw by a ballbearing 12. The swivel 10 is provided with '(lownwardly extending projections 10 to which is fastened b screws 13 a plate 14: carrying a rod 15 w ich extends completely and is fastened at its upper end to the reins 1 in such manner as to prevent relative rotation between the reins and the swivel. The connection between the upper end of the rod 15 and the reins 1. is by means of a block 15 which extends transversely between the reins and has grooves in its ends to receive the reins whereby the block is free to slide up and down on the reins as guides but is held from rotation relative to the reins. The upper end of the rod passes through an opening in the block 15 and is keyed thereto so that the rod cannot'rotate with respect to the block. Lock-nuts are provided on the screw-threaded end of the rod to securely fasten the block to the rod.

The handle bar which is designated by the reference numeral 16 is provided with a hub 17 rotatably mounted upon a cylindrical portion 18 of the temper screw. One of the arms 19 oft-hehandle bar has a screw-threadtion :22.

sleeve 23 having a knurled surface and provided with pins 24: engagin'gin spiral slots.

25 in the arm whereby rotation of the sleeve causes'it-to move axially of thearm. The arm 19 is provided with a bore 26 and-extending through the bore 26 and the opening 27 in the head of the sleevev23 is'a rod 28.

The endof the rod projecting through the sleeve 23 'is provided with anut. 29. The opposite end ofthe rod-projects through-a ,bore :30 inthetemper screw 3 forminga continuation of the bore 26 in the'arm 19-and normally engages an 1open1-ng31 in therod 15430 lock} the temper screwagainst rota- -tion-relative t0;lite-supporting.reins. The bore 26 of the arm is enlarged-at the-threadi-ed end-thereof--as, indicated ati-32 and lorated intheenlarged bore iswaccoil spring engaging at one end against the bottom ofthe bore-32 and at its 'ot her end against a shoulderomenlargementfid on the r0d28.

The coil spring 33 tends to normallymaintain the "rod-28 in interlocking; engagement 'with the opening 31 inthe rod 15. Torelease the 'l'0(l 28 from its 'interloeking en-- gagement with the-rod 15 the sleeve 2-3 is rotated in a direction to cause it to moveoutwardly with respect-tothe arm 1 9,t he'm1t 29-onthe rod 28 engagingwith the head of the sleeve and causing the rod to move outward'ly with the sleeveand-its end tog -he withdrawn from theopening- 31 with which it is engaged," whereupon the handle {barf 16 is=free=t0 rotate the temper screw. Thus-is provided asimple construction whereby the handle harmey be-assembledwith and'locked,

to the temper screw, and these parts readily unlocked and disassembled when desired, and whereby the temper-screw may belooked against rotation relative-to its; supporting Having thus described my; invention, what :I"cla.im as new andd'esire toisecure by L tpters Patent is:

- iii adevice 'of -the olassg descrihed, a

.temper screw, reins having jaws atftheir free ends for engagement with said .1 screw,

means movableto oneipositibnLiog holding said jaws closed anddn operative engagement with said 1 ,sorew and I movable. to another position, to permit said, jaws to be separated for disengaging, thempirem. said 1 screw. and adjustable/meansengageable withi the-reins incident to theriawr'elosingmovement of said means for limiting the move rection to close the able,

mentof'said' first-mentionedmeans in the direction to close the jaws.

2. In a device of the class described, a temperscrew; reinshaving jaws at their free ends for engagement with said screw, a mem- -ber'engaging one of said jaws, a lever pivotally connected to said member and provided with a cam portion for cooperation with the other of said jaws to hold the lat- ;ter closed and in operative engagement with said-screw in oneposition .of'said lever and permitting the jaws to be separatedfo'r'dislengaging them from said screw in"another position thereof, and an adjustable abutment to arrest movement of the lever in the .di-

\ I jaws after saidleverh'as passeddead center. v

3. In a device of the class described, a

temper screw, supporting means th'erforin' ,which said temper screw is rotatably adjustable, a handle carried 'saidtemper'screw, and means carried in partjby'said handlefor locking said temper screw againstrotation relative to said supporting means. 4. In a device of the class described', a'temper screw, supportinggmeansthereforin which said temper screw is'rotatablyxa'djustable, a handle carriedby said temper screw, I

land means for locking'said temper'screw against, rotationrelative tosaid supporting means. comprising a memb'enconnected to said supporting means and extending through said temper screw, a member slidably mounted in said 'handle and adapted to 1 interlock with saidfirst-mentioned member, and means for moving said sli'dable member into and out of'engagemen'twith saidfirstmentioned member. I

5-111 a dev'ie of he c a s'described,

temper screw, sl'ip'porting means therefor in .Which said temper screw isrotatably' adjusta handle carriedby saidtemperscrew,

and means for locking said temper screw against rotation-relative to' said supporting A means, comprising a member connected to said supportlng meansaind extending through Said temper screw, a me mherslidablj mount-- ed in said handleand" -adapted to interlock with said first-mentioned memlo'ermeans for 'sIHOVIIIg said slida'b'le member. into engagement with said fi'rs't men't ioned member," and separate means for movingsaid slid'able member out of engagementwith-said firstmentioned-mernhm" p j 6. In a device of'the cl'ass describe'd, a temper screw, supportingmeans therefor in which" said temper screw is rotatably adjustable, a handle carried 'by said temper screw, and'meansfor' lockingsa'id temper screw against rotation relative to said supporting means comprising "a member connectedto said supportin'g'means and extending through said temper'screw, ameniadapted to interlck with said first naentioned member, a spring for moving said slidable member into engagement with said first-mentioned member, and a member rotatably and slidably mounted upon said handle for moving said slidable member out of engagement with said first-mentioned member.

7. In a device of the class described, a temper screw, supporting means therefor in which said temper screw is rotatably adjustable, a handle carried by said temper screw and having a bore therein, and means for locking said temper screw against ro tation relative to said supporting means comprising a member connected to said supporting means and extending through said temper screw, a rod slidably mounted in the bore in said handle and in a bore in said tem er screw and adapted to interlock with sai member, a coil spring in said bore in said handle and engaging said rod for moving the latter into engagement with said member, and a sleeve rotatably and slidably mountedupon said handle for moving said rod out of engagement with said member.

8. In a device of the class described, a temper screw, supporting means therefor in which said temper screw is rotatably adjustable, a handle carried by said temper screw and having a bore extending therethrough from end-to-end, said bore being enlarged at the inner end of said handle, said temper screw having a bore forming a continuation of the bore in said handle, and means for locking said temper screw against rotation relative to said supporting means comprising a member connected to said supporting means and extending through said.

temper screw, a rod slidably mounted in the bores in said handle and temper screw and provided with a shoulder in the enlarged portion of the bore in said handle, a coil spring in saidenlarged bore having oneedge engaging the bottom of said bore and the other end engaging said shoulder for forcing said rod into engagement with said me uber, and means for moving said rod out of engagement with said member.

9. In a device of the class described, a temper screw, supporting means therefor in which said temper screw is rotatably adjustable, a handle carried by said temper screw, and means for locking said temper screw against rotation relative to said supporting means, comprising a member. connected to said supporting means and extending through said temper screw, a member slidably mounted in said handle and adapted to interlock with said first-mentioned member, means for moving said slidable member into engagement with said first-mentioned member, a sleeve rotatably mounted on the free end of said handle and having a head at its outer end provided with an opening therein for the passage of said slidable member, said slidable member having a shoulder on its outer end engaging the 'outer face of said head, and a pin on said sleeve engaging in a spiral slot in said handle whereby rotation of said sleeve causes the same to more axially of said handle and thereby move said slidable member to disengage it from said first-mentioned member.

10. In a device of the class described, a temper screw, supporting reins therefor in which said temper screw is rotatably adjustable, a swivel mounted on said temper screw, means carried by said swivel and engaging said reins, whereby to prevent relative rotation between said reins and swivel, and means carried by said temper screw and adapted for engagement with said 1ast mentioned means for locking said temper screw against rotation relative to said supporting reins and said swivel.

11. In a device of the class described, a temper screw, supporting reins therefor in which said temper screw is rotatably adjustable, a swivel mounted upon said temper screw and in which said temper screw is adapted to rotate, a member carried by said swivel and extending through said temper screw and connected to said reins for preventing rclative rotation between said swivel and reins, a handle carried by said temper screw, means slidably mounted in said handle and adapted to interlock with said member .to lock said temper screw against rotation relative to said swivel and reins, and means for moving said slidable means into and out of engagement with said member.

In testimony whereof I afiix my signature.

GLENN l3, TURNEY. 

